Fotjeths to richard b



(No Model.)

0. D. WOLGOTT.

ELEVATOR.

-N0. 306,453. Patented Oct. 14, 1884.

WITNESSES 11v VENTOR j 96 Uiarrnn drains Farmer @rm'cs.

ORVILLE D. \VOLCOTT, OF CEDAR RAPIDS, IOYVA, ASSIGNOIL 0i? THREE-FOURTHS TO RIGHARD'B. TOMLINSON AND \VILLIAM VT. SMITH, 30TH OF SAMEPLACE.

ELEVATO R.

ZEPBCIFICATIQN forming part of Letters Patent No. 306,i53, dated October1 1-, 188%.

Application filed August 27, 1884. (X0 model.)

To ctZZ whom it 72mg concern.-

Be it known that I, OnvrLLn 1). WoLoo'r'r, a citizen of the UnitedStates of America, a resident of Cedar Rapids, in the county of Linn andState of Iowa, have invented a new and useful Elevator, of which thefollowing is a specification.

My invention relates to improvements in hoisting apparatus or elevatorsof that class specially adapted to convey articles and objects in avertical direction, either in descent or ascent; and the object oftheimprovements is to provide a means of the kind named which willaccomplish the purposes intended with certainty, which is simple inconstruction and easily controlled in its movements, it being especiallyintended to construct a machine of the kind stated whiclrin case ofaccident to the connections of the moving power shall not beprecipitated to bottom of the line of travel.

The invention is fully made known and described in the followingdescription thereof, in connection with the accompanying draw ings, andis specifically pointed out in the claims hereinbelow made.

In the accompanying drawings, forming a part of this specification,Figure 1 is a per spective view of the elevator, in which are shown allthe parts; and Fi 2 is a view of the gcarings and screws.

The letter A represents the side timbers or supports, which are firmlyfixed at both ends, and also secured against liability to spread. To theinner face of each of these timbers is fastened a guide-rail, B, and inthese latter are safely set a line of headed studs, 0, provided withmovable washers or collars b, the object being to give a movablebearing-surface for the side screws of the cage, and thus lessen thefriction between the contacting parts.

The letter 0 represents the cage, which may be of any suitableconstruction so far as its receivingchamber is concerned. The lower partof the cage is preferably made, as shown by leaving the corner-pieces ofthe frame to extend down below the bottom of the chamher and securingthe ends bycross-pieces, and further strengthening these partsby meansof other cross-pieces so placed that they shall serve as thebearing-bases of the side screws, substantially as shown.

The letter 1) represents endless screws haw ing their ends disposed inbearings fixed to the bottom of the cage proper and on the crosspieeesat the bottom of the frame. Each of these screws is arranged to properlyen gage with thestuds in the side rails of the frame and formed withbevel-gearing at the upper part, as shown at c. Arranged in bearingsfixed to the under side of the bottom of the *age is a shaft, L, havingbevel-gear on each end to engage with those on the endless screws,andalso provided with cord-pulleys d d, and in the central portion of thisshaft E are ratchetwhecls c, for a purpose hereinafter stated.lPivotally secured to the bottom of the cage is thelevcr 1 with thehandle extending upward, and the lower end which is formed into a pawlextending below the bottom and disposed so as to engage with theratchets on the shaft 1*]. The object of this lever, in connection withthe ratchets on the shaft, is to provide means, in case the power breaksor is inoperative from any cause when the cage is in progression ineither direction, for the occupant to descend. The action of the leveron the ratchets will turn the shaft and operate the machinery, and thuslower the cage to the desired locality.

The letter G represents a shaft secured at the bottom of the sideframes. I have represented the powershat't in the drawings as havingattached thereto a crank as the means for turning the shaft; but it isapparent that any other means may be applied to turn this shaft andcommunicate motion to the elevator proper. The cords H H are secured tothis power-shaft, and from thence extend to the cord-pulleys upon thehorizontal shaft arranged beneath the bottom of the cage, being disposedupon the power and about the cordpulleys, so that the mechanism shall beforcibly exerted either in descent or elevation of the elevator. I haveshown one of the cords extended through the chamber of the elevator andset about a pulley, K, arranged upon journals at the top of the frame,thereby providing a means for manipulating or moving the mechanism fromthe inside of the by it are readily controlled by the power applied,asshown, in either direction, yet in any case of accident to theconnections between the power and the mechanism carried by the elevatorthere is no liability or danger of the elevator being precipitated or ofits occupants or contents being jeopardized by such an occurrence. Itwill be further observed that in case of the severance or disconnectionof the power and the elevator at any moment or in any position theoccupant may descend in safety and with certainty by operating thelever, which, in its connection with the ratchets on the shaft securedunder the cage, effects the operation of the mechanism and lowers theelevator.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is'

1. In combination, the side frames or timbers having guide-rails securedthereto, pro 'vided with a line of headed studs having antifrictionwashers, the endless screws with beveled gear vertically arranged anddisposed to engage with the line of studs, a horizontal shaft gearedwith the endless screws and journaled to the bottom of the'cage, andcarrying corded pulleys, and means for operating them, substantially asshown and described.

2. In combination with the side frames having guide-rails provided witha line of headed studs and carrying anti-friction collars, and 35vertically-arranged endless screws having their bearings in the frameunder the cage and engaging with the line of studs,and formed with thebeveled gear, and a horizontal shaft journaled beneath the bottom of thecage and 4c provided with ratchet-wheels, a lever pivotally secured inthe bottom of the cageto engage with the ratchets and operate themechanism, substantially as and for the purposes set forth.

, 3. In combination with the cage of an elevator and the operativemechanism thereof, a shaft carrying ratchetwheels secured thereto, and alever pivotally secured to the bottom of the cage to engage with theratchets and 5c ORVILLE D. WoLooTT Attest:

I. N.WHITTAM, JAMES J. CHILD.

